<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>广告页</title>
</head>
<body class="dpflex fdcolumn">
    <!-- 头部 -->
    <div class="header">源码健身</div>

    <!-- 内容区域 -->
    <div class="flex1 content"></div>
    <!-- 倒计时 -->
    <div class="count-down" id="countDown">
        <span id="countNum"></span>秒 | 跳过
    </div>
    <!-- 动画 -->
    <p class="slogan">HOLD ON</p>
</body>
</html>